In art’s history, there are two types of popularity. The first type is artist popularity. This is when the artist themselves receive more recognition and praise than their plethora of works. Renaissance artists Leonardo da Vinci and Michelangelo di Lodovico Buonarroti Simoni (better known by his first name only), as well as modern artists, like Pablo Picasso and Akiane Kramarik, are fine examples.

If you happen to be traveling by plane over the Norwegian countryside (or, maybe, spying aerial perspectives of the region by drone) Design Museum suggest flying over a little municipality called Klepp in Rogaland county. There, you’ll find artists and organizers prepping for a not-so-little street art festival known as Nuart, set to open its 15th iteration on Sept. 4.

So Design Museum brings to you French artists Ella & Pitr. Unless they are followed within the artists’ social and media circles, most people may not know who they are. However, their work on murals is recognized worldwide. Now, they are being honored for creating the “world’s largest mural” at Norway’s Nuart Festival.

Ella & Pitr created the mural starting on Friday, August 21, 2015, for the upcoming Nuart Festival in the Klepp Kommune.

With the help of an army of volunteers and Block Berge Bygg providing their building’s roof — which is about 21,000 square meters (or 226,040 square feet) in size — as its canvas, Ella & Pitr set to work over the course of four days. Needless to say, the mural — titled Lilith and Olaf — is amazing, especially when viewed from above (shown in the video below).